Changjun, Kanphitcha, and Sasilak Khayankij. 2022. “State and Problems of Distance Learning Instructional Management in the Covid-19 Situation of Preschool Teachersin School under Lopburi Primary Educations Service Area Office 1”. An Online Journal of Education 17 (2):OJED1702021 (15 pages). https://so01.tci-thaijo.org/index.php/OJED/article/view/260506.